Transcription is a music information retrieval task with the goal of estimating the score \(y\)  when input audio \(x\)  is given. The majority of the recent transcription systems is based on supervised learning, where the transcriber is an analysis system
\(\hat{y} = F_a(x)\)  that is trained with annotated pairs \(\lbrace  (x_m, y_m) \rbrace _{m=1}^M\)  to minimize the distance between \(y\)  and \(\hat{y}\)  [1]}, [2]}, [3]}, [4]}, [5]}, [6]}, [7]}, [8]}.
